The City of Copenhagen recently launched a public bicycle counter [copenhagenize.com], completely equipped with an air pump for the convenience of cyclists. The urban display counts the daily number of cyclists that use the new Green Path that slices diagonally across the Copenhagen and Frederiksberg pathway system. There is a 'sensor line' in the asphalt on the bike lane a few metres in front of the counter which registers the cyclists, probably via a motion sensor.
The idea is to encourage more people to ride by showing how many are using it. The numeric displays show the total so far today and this year. On the barometer-styled display, the left side will show last years' total.
The #500,000s cyclist passing by will get a fancy new bike.
Image taken from Matt Blackett at Flickr.